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12 results for “Lyssacinosida”
FIGURE 8 in Bathydorus laniger and Docosaccus maculatus (Lyssacinosida; Hexactinellida): Two new species of glass sponge from the abyssal eastern North Pacific Ocean
FIGURE 8. Spicule images of Docosaccus maculatus sp. n. (LM). A. Atrial pentactin. B. Choanosomal hexactin. C. Dermal hexactin. Scale bar (between Figures 8a and 8b): 200 µm. D–G. Oxyhexasters. Scale bar (between 8d and 8f): 50 µm.
FIGURE 9 in Bathydorus laniger and Docosaccus maculatus (Lyssacinosida; Hexactinellida): Two new species of glass sponge from the abyssal eastern North Pacific Ocean
FIGURE 9. Floricomes of Docosaccus maculatus sp. n. (SEM). A. Complete floricome. Scale bar: 50 µm. B. Close-up of floricome secondary rays. Scale bars: A, 50 µm; B, 10 µm.
FIGURE 7 in Bathydorus laniger and Docosaccus maculatus (Lyssacinosida; Hexactinellida): Two new species of glass sponge from the abyssal eastern North Pacific Ocean
FIGURE 7. Giant prostal hexactins crisscross through the thin body of the sponge, creating an unfused support structure for the plate-like sponge (A). Small distal rays project downward into sediments while reduced knobs project upward to the atrial surface of the sponge (B). Diactins bundle together with the distal ray to create anchoring spicule tufts (not shown). Scale bars: A, 100 µm; B, 1 cm.
FIGURE 5 in Bathydorus laniger and Docosaccus maculatus (Lyssacinosida; Hexactinellida): Two new species of glass sponge from the abyssal eastern North Pacific Ocean
FIGURE 5. Docosaccus maculatus sp. n., whole body images of holotype. A. In situ photograph taken by ROV Tiburon. Atrial surface with black and white spots visible. Black spots are caused by shadows in holes that perforate the body (parietal oscula); white spots occur where anchoring spicule tufts are visible through the body. Credit: MBARI. B. Dermal surface, fouled to a beige color from sediment during collection, showing small papillae consisting of anchoring spicule bundles. Scale bar: 5 cm.
FIGURE 6 in Bathydorus laniger and Docosaccus maculatus (Lyssacinosida; Hexactinellida): Two new species of glass sponge from the abyssal eastern North Pacific Ocean
FIGURE 6. Diagram of spicule arrangement for Docosaccus maculatus sp. n. from Station M, California, USA. The atrial surface is at the top of the image while the dermal surface is at the bottom. Scale bar: 200 µm.
FIGURE 3 in Bathydorus laniger and Docosaccus maculatus (Lyssacinosida; Hexactinellida): Two new species of glass sponge from the abyssal eastern North Pacific Ocean
FIGURE 3. Bathydorus laniger sp. n. from Station M, California, USA; scale diagram of spicule arrangement. The atrial surface is at the top of the image while the dermal surface is at the bottom; prostal diactins are omitted. Scale bar: 200 µm.
FIGURE 4 in Bathydorus laniger and Docosaccus maculatus (Lyssacinosida; Hexactinellida): Two new species of glass sponge from the abyssal eastern North Pacific Ocean
FIGURE 4. Bathydorus laniger sp. n., spicule images from SEM. A. Dermal stauractin. B. Hypoatrial hexactin. C. Hypodermal pentactin. D. Tip of choanosomal diactin. E. Oxyhexaster, oxyhemihexasters, and oxyhexactin. Scale bar: 200 µm.
FIGURE 2 in Bathydorus laniger and Docosaccus maculatus (Lyssacinosida; Hexactinellida): Two new species of glass sponge from the abyssal eastern North Pacific Ocean
FIGURE 2. Bathydorus laniger sp. n. holotype, whole body images. A. In situ photograph of whole organism taken by ROV Tiburon. Atrial surface with marginal prostalia visible. Credit: MBARI. B. Dermal surface fouled to a beige color from sediment during collection, with pleural prostalia (P) seen protruding as long, single diactins. Scale bar: 10 cm.
FIGURE 1 in Bathydorus laniger and Docosaccus maculatus (Lyssacinosida; Hexactinellida): Two new species of glass sponge from the abyssal eastern North Pacific Ocean
FIGURE 1. Collection location of two new species of glass sponges with a unique plate-like morphology: Station M (4,100 m depth, 34º50'N, 123º0'W), a long-term abyssal study site in the northeast Pacific.
FIGURE 2 in A review of the Hexactinellida (Porifera) of Chile, with the first record of Caulophacus Schulze, 1885 (Lyssacinosida: Rossellidae) from the Southeastern Pacific Ocean
FIGURE 2. Caulophacus chilense sp. nov. spicules. A. Three dermal pinules including two normal hexactine forms and one uncommon pentactine form (all pinules to same scale). B. Two atrial hexactine pinules. C. A choanosome diactin, whole and enlargements of the tip and center. D. Hypodermal pentactin, whole and enlarged tangential ray end. E. Two whole hypoatrial pentactins showing different lengths of proximal rays, and enlargements of the ray ends. F. Choanosomal hexactin, whole and enlargement of a ray end and the coarsely spined central area. G. Discohexactin and enlarged ray end (all whole microscleres at same scale). H. Hemidiscohexaster. I. Discohexaster A. J. Small thin-rayed discohexaster B shown from LM since this form was not encountered in SEM surveys.
FIGURE 1 in A review of the Hexactinellida (Porifera) of Chile, with the first record of Caulophacus Schulze, 1885 (Lyssacinosida: Rossellidae) from the Southeastern Pacific Ocean
FIGURE 1. Caulophacus chilense sp. nov. A. The holotype, dried. B. The upper body. C. Surface of the atrial or top surface. D. Close-up image of the irregular atrial lattice. E. Surface of the derma or lower body surface with radiating subdermal strands of diactins. F. Close-up of the more regular dermal lattice of pinular hexactins supported by a coarser lattice of hypodermal pentactins.
FIGURE 1 in New Hexactinellid Sponge Chaunoplectella megapora sp. nov. (Lyssacinosida: Leucopsacidae) from Clarion-Clipperton Fracture Zone, Eastern Pacific Ocean
FIGURE 1. Chaunoplectella megapora sp. nov. A, holotype in situ. B, preserved holotype. C and C', choanosomal hexactin and its end. D, ray end of diactin. E, diactin. F, pentactin. G, stauractin. H and H', hexactin and its end. I, toothed discohexaster. J, secondary ray of toothed discohexaster. K, toothed hemidiscohexaster. L, secondary ray of toothed hemidiscohexaster. M, sigmatocome with hemidiscohexaster. N, primary rosette of sigmatocome. O, broken secondary ray of sigmatocome. P, anchorate discohexaster. Q, codonhexaster. R, stellate discohexaster (arrow). S, unique sigmatocome.
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